btrfs-progs: docs: fix spinx build warnings

Fix the following warnings:

    [SPHINX] man
../CHANGES:37: ERROR: Unexpected indentation.
../CHANGES:1183: WARNING: Block quote ends without a blank line; unexpected unindent.
./Documentation/DocConventions.rst:31: ERROR: Unexpected indentation.
./Documentation/Source-repositories.rst:2: WARNING: Duplicate explicit target name: "web access".
./Documentation/DocConventions.rst: WARNING: document isn't included in any toctree

The free format of CHANGES sometimes does not align with RST so fix it
so it's visually similar in both formats. Remove RST references to 'web
access', URLs are parsed and rendered clickable and we don't have full
reference list yet. Doc conventions have been updated to RST but not
finalized so put it to TODO section.

Signed-off-by: David Sterba <dsterba@suse.com>

CHANGES

@@ -43,7 +43,7 @@ btrfs-progs-5.17 (2022-04-26)
 	 profiles
    * preparatory work for extent tree v2, global roots
    * experimental feature (unstable interface, not built by default,
-     do not use for production):
+       do not use for production)
        * btrfstune: option --csum to switch checksum algorithm
    * other:
        * cleanups, refactoring
@@ -1190,6 +1190,7 @@ btrfs-progs-4.4 (2016-01-18)
         * usage=min..max -- enhanced to take range
         * stripes=min..max -- new, filter by stripes for raid0/10/5/6
         * limit=min..max -- enhanced to take range
+
   Note: due to backward compatibility, the range maximum for 'usage' is not
   inclusive as for the others, to keep the same behaviour as usage=N .
 

Documentation/DocConventions.rst

@@ -28,7 +28,7 @@ Quotation in subcommands:
 
 - argument name in option description: caps in angle brackets <NAME>
   - reference in help text: caps NAME
-    also possible: caps italics *NAME*
+  - also possible: caps italics *NAME*
 
 - command short description:
   - command name: bold **command**

Documentation/Source-repositories.rst

@@ -40,17 +40,16 @@ Official repositories
 
 The sources of the userspace utilities can be obtained from these repositories:
 
-* git://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git (`gitweb
-  access
-  <http://git.kernel.org/?p=linux/kernel/git/kdave/btrfs-progs.git;a=summary>`_)
+* git://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git (
+  http://git.kernel.org/?p=linux/kernel/git/kdave/btrfs-progs.git;a=summary)
   -- release repository, not for development
 
 The **master** branch contains the latest released version and is never rebased.
 
 Development git repositories:
 
-* git://github.com/kdave/btrfs-progs.git (`web access <https://github.com/kdave/btrfs-progs>`_)
-* git://gitlab.com/kdave/btrfs-progs.git (`web access <https://gitlab.com/kdave/btrfs-progs>`_)
+* git://github.com/kdave/btrfs-progs.git (https://github.com/kdave/btrfs-progs)
+* git://gitlab.com/kdave/btrfs-progs.git (https://gitlab.com/kdave/btrfs-progs)
 
 For build dependencies and installation instructions please see
 https://github.com/kdave/btrfs-progs/blob/master/INSTALL

Documentation/index.rst

@@ -53,3 +53,4 @@ Welcome to BTRFS documentation!
    trouble-index
    Experimental
    btrfs-ioctl
+   DocConventions